Research on several parameters influencing on laser cooling of solids

被引:1
|
作者
Jia You-Hua
Ji Xian-Ming
Yin Jian-Ping [1 ]
机构
[1] E China Normal Univ, Key Lab Opt & Magnet Resonance Spect, Shanghai 200062, Peoples R China
[2] Nantong Univ, Coll Sci, Nantong 226007, Peoples R China
关键词
laser cooling; anti-Stokes fluorescence; doped concentrations; cooling power;
D O I
10.7498/aps.56.1770
中图分类号
O4 [物理学];
学科分类号
0702 ;
摘要
Laser cooling of solids is also called anti-Stokes fluorescent cooling, it is a new optical cooling technology in recent years. We propose a two-level model to analyze the absorption and stimulated-emission processes between the Yb3+2F7/2 ground-state manifold and the F-2(5/2) excited-state manifold, and discuss several parameters that influence the cooling power, and find some ways to improve the cooling power. The influences of the doped concentration, pumping power and the effective pump-spot area on cooling are particularly analyzed. At the same time, we make computer simulation about the cooling process and obtain the temperature as a function of the cooling time, which is similar to the experimental results. So this shows that our model is reasonable.
引用
收藏
页码:1770 / 1774
页数:5
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